Compressor for ice-making apparatus.



O. A. SANQUIST.

COMPRESSOR FOR ICE MAKING APPARATUS.

APPLICATION FILED JULY 8 1912.

1,055,661, Patented Mar. 11, 1913.

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UNITE STAT arrrnion.

CHARLES A. SANQUIST, OF ST. LOUIS, MISSOURI.

COMPRESSOR FOB ICE-MAKING APPARATUS.

Specification of Letters Patent. Patented Ma1.11,1913.

Application filed July 8, 1912. Serial No. 708,109..

1 '0 all ac/tom it may concern:

lie it known that I, CnxRLus A. SANQUIST, a citizen of the United States of America, and a resident of the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Compressors for Ice-Making Apparatuses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to a compressor used "in an ice making apparatus to compress amducting pipes shown partly in elevation and partly in section. Fig. II is an enlarged cross section taken on line IIII, Fig. I. Fig. III is an enlarged cross section taken on line IlIIlI, Fig. II.

in the drawings :A designates a gas conducting pipe which leads from the evaporator of the ice making apparatus to the housing 13 of my compressor, and C is a gas conducting pipe leading from said housing to the condenser of the same apparatus, neither the evaporator nor the condenser being shown. The conducting pipe A is provided with a check valve a which permits flow of gas thcrethrough only in a direction toward the compressor housing, and the conducting pipe C is provided with a valve 0, which permits flow of gas only in a direction away from said housing.

he compressor housing B is cylindrical in shape and has centrally mounted therein a blade carrying shaft 1. journaled in suitable bearing boxes 6 provided with stufiing boxes, which prevent any escape of gas between the shaft journals and their bearings. The shaft 1 is provided with a plurality of longitudinal grooves or pockets 2 having straight and parallel walls, the said grooves being located wholly within the compressor housing B. A

3 designates a series of blades of a number corresponding to the number of pockets The shaft 1 is.

in the shaft 1, and the inner ends of which are firmly seated in said pockets. The blades 3 extend radially from the shaft 1, and their side edges and outer ends are arranged in 6" close proximity to the inner walls of the compressor housing, both at its sides and at its circumference. The blades are positively held against a radial movement by the cir pi cumferential wall of the compressor housing. Each blade is provided with an edge groove 4, occupied by packing strips 5, which are constantly pressed outwardly to the walls of the compressor housing by suitable springs 6, (see Fig. 111), located inthe grooves l'baok ofsaid packing strips. It will be readily perceived that the spring pressed packing strlps 5 are constantly maintained in contact with the inner walls of the compressor housing and that, consequently,

when the blades 3 are rotated through the medium of the shaft 1, operated by power suitably applied thereto, there is no opportunity for passage of fluid from a space between any consecutive pair of the blades to the space between other pairs of blades. Consequently, when the blades are rotated within the compressor housing each pair of blades serves to provide a collecting pocketinto which gas is received from the conducting pipe A leading from the evaporator of an ice making apparatus, and carries the gas so received until the pocket is in communication with the =pipe C leading to the condenser of the ice making apparatus, into which it is forcibly delivered due to pressure thereagainst by the rearmost of the pair of blades forming the pocket.

For the purpose of firmly holding the several blades 3 collectively, in order that they will withstand the strain imposed thereupon in the use of my compressor, I connect the blades in pairs by tie-rods 7, using preferably two tie-rods to connect each blade to the-blade next adjacent thereto, and due to which arrangement each blade is connected directly to the-blade in front of it, and also to the blade back of it. Therefore, when the tie-rods are used in pairs, each blade receives the connection of tour tie-rods; whereas, if the tie-rods were used singly, each blade would receive the connection of only two tie-rods, one leading lforwardl therefrom and the other leading rearwardl y therefrom. This arrangement of tie-rods, as will be quite evident, provides for the blades '3 being joined to each other in. such manner as to prevent them from tilting and to hold their inner ends firmly seated in the grooves or pockets 2 in the shaft 1, provided for their reception.

It will be perceived that my compressor is of extremely simple construction throughout, comprises a minimum number of parts, and, consequently, may be constructed at a minimum of cost as compared with compressors utilized for a similar purpose, and the merits of the improvement will, therefore, he manifest.

I elaimz- The combination with two gas conducting pipes of an ice making apparatus, of a gas 1 compressor housing between said pipes, a shaft in said housing, said shaft being provided with plain longitudinal grooves, spaced blades extending radially from said shaft and having their inner ends seated in said plain grooves, said blades having no direct connection with said, shaft, and tie rods connecting said blades near theirouter ends.

CHAS. A. SiilTiQUliST.

in the presence oi A. J. MGUAULAY, E 13. LINN. 

